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Seed Tool

v2.0.1

This page offers a space for bitcoiners to experiment and learn how bitcoin wallets are generated using different sources of entropy (randomness). The page also offers many other seed related functionalites, some of which are outlined below. Just like the tools and libraries used in its creation, this tool is also completely free and open source. If you find this page useful, consider donating some sats to the lead developer SuperPhatArrow.

Warning

NEVER use the online version of this tool to create or interact with seeds used to manage real bitcoin. While there is nothing in this tool that collects private information or sends it anywhere, there may be other software on your device that does. If the tool detects a network connection, it will display a network symbol in the top corner of the screen. To use this tool offline, use the link below to download the page HTML file and open in any web browser on an offline device or an amnesic operating system like Tails.

Usage

Some common use cases for this tool include:-

  • Learning how entropy is used to derive wallet components
  • Generating seeds via dice rolls, coin flips or playing cards
  • Verifying entropy inputs (dice rolls etc) applied to external wallets or signers
  • Generating BIP85 child seeds (or check those generated by a signing device)
  • Generating BIP47 payment codes and their corresponding PayNym avatars
  • Generating BIP47 addresses between any two payment codes
  • Verifying wallet address generation from a given seed/passphrase combination
  • Testing for a forgotten/incorrect passphrase (if you know a receive address)

  • 🤖 Generate a cryptographically strong random mnemonic
  • 📥 Enter your own (previously generated) mnemonic
  • 🎲 Enter in your own entropy

Generate a Cryptographically Random Mnemonic of words.

Warning! Do not try to make up your own mnemonic, you are not as random as you think!

NOTE: You can enter your BIP39 Passphrase below.


Warning! Entropy is an advanced feature. Your mnemonic may be insecure if this feature is used incorrectly.

Click on the orange button above to learn more.

BIP39: Mnemonic code for generating deterministic keys


No passphrase entered!


BIP32: Hierarchical Deterministic 'Legacy' Wallets


BIP86: Key Derivation for Single Key P2TR Outputs



Note these addresses are derived from the BIP32 Extended Key

Display addresses from index to index

My Details

Counterparty Details

Loaded Seed Master Extended Public Keys

Input Cosigners and Threshold

Address Type

Display   addresses from index

Warning! This is an advanced feature and should only be used if you understand what it does. Click on the button above to learn more.

Libraries & Tools

, '%', '*', '+', '-', '.', '/', ':' ] function AlphanumericData (data) { this.mode = Mode.ALPHANUMERIC this.data = data } AlphanumericData.getBitsLength = function getBitsLength (length) { return 11 * Math.floor(length / 2) + 6 * (length % 2) } AlphanumericData.prototype.getLength = function getLength () { return this.data.length } AlphanumericData.prototype.getBitsLength = function getBitsLength () { return AlphanumericData.getBitsLength(this.data.length) } AlphanumericData.prototype.write = function write (bitBuffer) { let i // Input data characters are divided into groups of two characters // and encoded as 11-bit binary codes. for (i = 0; i + 2 <= this.data.length; i += 2) { // The character value of the first character is multiplied by 45 let value = ALPHA_NUM_CHARS.indexOf(this.data[i]) * 45 // The character value of the second digit is added to the product value += ALPHA_NUM_CHARS.indexOf(this.data[i + 1]) // The sum is then stored as 11-bit binary number bitBuffer.put(value, 11) } // If the number of input data characters is not a multiple of two, // the character value of the final character is encoded as a 6-bit binary number. if (this.data.length % 2) { bitBuffer.put(ALPHA_NUM_CHARS.indexOf(this.data[i]), 6) } } module.exports = AlphanumericData },{"./mode":16}],6:[function(require,module,exports){ function BitBuffer () { this.buffer = [] this.length = 0 } BitBuffer.prototype = { get: function (index) { const bufIndex = Math.floor(index / 8) return ((this.buffer[bufIndex] >>> (7 - index % 8)) & 1) === 1 }, put: function (num, length) { for (let i = 0; i < length; i++) { this.putBit(((num >>> (length - i - 1)) & 1) === 1) } }, getLengthInBits: function () { return this.length }, putBit: function (bit) { const bufIndex = Math.floor(this.length / 8) if (this.buffer.length <= bufIndex) { this.buffer.push(0) } if (bit) { this.buffer[bufIndex] |= (0x80 >>> (this.length % 8)) } this.length++ } } module.exports = BitBuffer },{}],7:[function(require,module,exports){ /** * Helper class to handle QR Code symbol modules * * @param {Number} size Symbol size */ function BitMatrix (size) { if (!size || size < 1) { throw new Error('BitMatrix size must be defined and greater than 0') } this.size = size this.data = new Uint8Array(size * size) this.reservedBit = new Uint8Array(size * size) } /** * Set bit value at specified location * If reserved flag is set, this bit will be ignored during masking process * * @param {Number} row * @param {Number} col * @param {Boolean} value * @param {Boolean} reserved */ BitMatrix.prototype.set = function (row, col, value, reserved) { const index = row * this.size + col this.data[index] = value if (reserved) this.reservedBit[index] = true } /** * Returns bit value at specified location * * @param {Number} row * @param {Number} col * @return {Boolean} */ BitMatrix.prototype.get = function (row, col) { return this.data[row * this.size + col] } /** * Applies xor operator at specified location * (used during masking process) * * @param {Number} row * @param {Number} col * @param {Boolean} value */ BitMatrix.prototype.xor = function (row, col, value) { this.data[row * this.size + col] ^= value } /** * Check if bit at specified location is reserved * * @param {Number} row * @param {Number} col * @return {Boolean} */ BitMatrix.prototype.isReserved = function (row, col) { return this.reservedBit[row * this.size + col] } module.exports = BitMatrix },{}],8:[function(require,module,exports){ const encodeUtf8 = require('encode-utf8') const Mode = require('./mode') function ByteData (data) { this.mode = Mode.BYTE if (typeof (data) === 'string') { data = encodeUtf8(data) } this.data = new Uint8Array(data) } ByteData.getBitsLength = function getBitsLength (length) { return length * 8 } ByteData.prototype.getLength = function getLength () { return this.data.length } ByteData.prototype.getBitsLength = function getBitsLength () { return ByteData.getBitsLength(this.data.length) } ByteData.prototype.write = function (bitBuffer) { for (let i = 0, l = this.data.length; i < l; i++) { bitBuffer.put(this.data[i], 8) } } module.exports = ByteData },{"./mode":16,"encode-utf8":2}],9:[function(require,module,exports){ const ECLevel = require('./error-correction-level') const EC_BLOCKS_TABLE = [ // L M Q H 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 2, 4, 1, 2, 4, 4, 2, 4, 4, 4, 2, 4, 6, 5, 2, 4, 6, 6, 2, 5, 8, 8, 4, 5, 8, 8, 4, 5, 8, 11, 4, 8, 10, 11, 4, 9, 12, 16, 4, 9, 16, 16, 6, 10, 12, 18, 6, 10, 17, 16, 6, 11, 16, 19, 6, 13, 18, 21, 7, 14, 21, 25, 8, 16, 20, 25, 8, 17, 23, 25, 9, 17, 23, 34, 9, 18, 25, 30, 10, 20, 27, 32, 12, 21, 29, 35, 12, 23, 34, 37, 12, 25, 34, 40, 13, 26, 35, 42, 14, 28, 38, 45, 15, 29, 40, 48, 16, 31, 43, 51, 17, 33, 45, 54, 18, 35, 48, 57, 19, 37, 51, 60, 19, 38, 53, 63, 20, 40, 56, 66, 21, 43, 59, 70, 22, 45, 62, 74, 24, 47, 65, 77, 25, 49, 68, 81 ] const EC_CODEWORDS_TABLE = [ // L M Q H 7, 10, 13, 17, 10, 16, 22, 28, 15, 26, 36, 44, 20, 36, 52, 64, 26, 48, 72, 88, 36, 64, 96, 112, 40, 72, 108, 130, 48, 88, 132, 156, 60, 110, 160, 192, 72, 130, 192, 224, 80, 150, 224, 264, 96, 176, 260, 308, 104, 198, 288, 352, 120, 216, 320, 384, 132, 240, 360, 432, 144, 280, 408, 480, 168, 308, 448, 532, 180, 338, 504, 588, 196, 364, 546, 650, 224, 416, 600, 700, 224, 442, 644, 750, 252, 476, 690, 816, 270, 504, 750, 900, 300, 560, 810, 960, 312, 588, 870, 1050, 336, 644, 952, 1110, 360, 700, 1020, 1200, 390, 728, 1050, 1260, 420, 784, 1140, 1350, 450, 812, 1200, 1440, 480, 868, 1290, 1530, 510, 924, 1350, 1620, 540, 980, 1440, 1710, 570, 1036, 1530, 1800, 570, 1064, 1590, 1890, 600, 1120, 1680, 1980, 630, 1204, 1770, 2100, 660, 1260, 1860, 2220, 720, 1316, 1950, 2310, 750, 1372, 2040, 2430 ] /** * Returns the number of error correction block that the QR Code should contain * for the specified version and error correction level. * * @param {Number} version QR Code version * @param {Number} errorCorrectionLevel Error correction level * @return {Number} Number of error correction blocks */ exports.getBlocksCount = function getBlocksCount (version, errorCorrectionLevel) { switch (errorCorrectionLevel) { case ECLevel.L: return EC_BLOCKS_TABLE[(version - 1) * 4 + 0] case ECLevel.M: return EC_BLOCKS_TABLE[(version - 1) * 4 + 1] case ECLevel.Q: return EC_BLOCKS_TABLE[(version - 1) * 4 + 2] case ECLevel.H: return EC_BLOCKS_TABLE[(version - 1) * 4 + 3] default: return undefined } } /** * Returns the number of error correction codewords to use for the specified * version and error correction level. * * @param {Number} version QR Code version * @param {Number} errorCorrectionLevel Error correction level * @return {Number} Number of error correction codewords */ exports.getTotalCodewordsCount = function getTotalCodewordsCount (version, errorCorrectionLevel) { switch (errorCorrectionLevel) { case ECLevel.L: return EC_CODEWORDS_TABLE[(version - 1) * 4 + 0] case ECLevel.M: return EC_CODEWORDS_TABLE[(version - 1) * 4 + 1] case ECLevel.Q: return EC_CODEWORDS_TABLE[(version - 1) * 4 + 2] case ECLevel.H: return EC_CODEWORDS_TABLE[(version - 1) * 4 + 3] default: return undefined } } },{"./error-correction-level":10}],10:[function(require,module,exports){ exports.L = { bit: 1 } exports.M = { bit: 0 } exports.Q = { bit: 3 } exports.H = { bit: 2 } function fromString (string) { if (typeof string !== 'string') { throw new Error('Param is not a string') } const lcStr = string.toLowerCase() switch (lcStr) { case 'l': case 'low': return exports.L case 'm': case 'medium': return exports.M case 'q': case 'quartile': return exports.Q case 'h': case 'high': return exports.H default: throw new Error('Unknown EC Level: ' + string) } } exports.isValid = function isValid (level) { return level && typeof level.bit !== 'undefined' && level.bit >= 0 && level.bit < 4 } exports.from = function from (value, defaultValue) { if (exports.isValid(value)) { return value } try { return fromString(value) } catch (e) { return defaultValue } } },{}],11:[function(require,module,exports){ const getSymbolSize = require('./utils').getSymbolSize const FINDER_PATTERN_SIZE = 7 /** * Returns an array containing the positions of each finder pattern. * Each array's element represent the top-left point of the pattern as (x, y) coordinates * * @param {Number} version QR Code version * @return {Array} Array of coordinates */ exports.getPositions = function getPositions (version) { const size = getSymbolSize(version) return [ // top-left [0, 0], // top-right [size - FINDER_PATTERN_SIZE, 0], // bottom-left [0, size - FINDER_PATTERN_SIZE] ] } },{"./utils":23}],12:[function(require,module,exports){ const Utils = require('./utils') const G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0) const G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1) const G15_BCH = Utils.getBCHDigit(G15) /** * Returns format information with relative error correction bits * * The format information is a 15-bit sequence containing 5 data bits, * with 10 error correction bits calculated using the (15, 5) BCH code. * * @param {Number} errorCorrectionLevel Error correction level * @param {Number} mask Mask pattern * @return {Number} Encoded format information bits */ exports.getEncodedBits = function getEncodedBits (errorCorrectionLevel, mask) { const data = ((errorCorrectionLevel.bit << 3) | mask) let d = data << 10 while (Utils.getBCHDigit(d) - G15_BCH >= 0) { d ^= (G15 << (Utils.getBCHDigit(d) - G15_BCH)) } // xor final data with mask pattern in order to ensure that // no combination of Error Correction Level and data mask pattern // will result in an all-zero data string return ((data << 10) | d) ^ G15_MASK } },{"./utils":23}],13:[function(require,module,exports){ const EXP_TABLE = new Uint8Array(512) const LOG_TABLE = new Uint8Array(256) /** * Precompute the log and anti-log tables for faster computation later * * For each possible value in the galois field 2^8, we will pre-compute * the logarithm and anti-logarithm (exponential) of this value * * ref {@link https://en.wikiversity.org/wiki/Reed%E2%80%93Solomon_codes_for_coders#Introduction_to_mathematical_fields} */ ;(function initTables () { let x = 1 for (let i = 0; i < 255; i++) { EXP_TABLE[i] = x LOG_TABLE[x] = i x <<= 1 // multiply by 2 // The QR code specification says to use byte-wise modulo 100011101 arithmetic. // This means that when a number is 256 or larger, it should be XORed with 0x11D. if (x & 0x100) { // similar to x >= 256, but a lot faster (because 0x100 == 256) x ^= 0x11D } } // Optimization: double the size of the anti-log table so that we don't need to mod 255 to // stay inside the bounds (because we will mainly use this table for the multiplication of // two GF numbers, no more). // @see {@link mul} for (let i = 255; i < 512; i++) { EXP_TABLE[i] = EXP_TABLE[i - 255] } }()) /** * Returns log value of n inside Galois Field * * @param {Number} n * @return {Number} */ exports.log = function log (n) { if (n < 1) throw new Error('log(' + n + ')') return LOG_TABLE[n] } /** * Returns anti-log value of n inside Galois Field * * @param {Number} n * @return {Number} */ exports.exp = function exp (n) { return EXP_TABLE[n] } /** * Multiplies two number inside Galois Field * * @param {Number} x * @param {Number} y * @return {Number} */ exports.mul = function mul (x, y) { if (x === 0 || y === 0) return 0 // should be EXP_TABLE[(LOG_TABLE[x] + LOG_TABLE[y]) % 255] if EXP_TABLE wasn't oversized // @see {@link initTables} return EXP_TABLE[LOG_TABLE[x] + LOG_TABLE[y]] } },{}],14:[function(require,module,exports){ const Mode = require('./mode') const Utils = require('./utils') function KanjiData (data) { this.mode = Mode.KANJI this.data = data } KanjiData.getBitsLength = function getBitsLength (length) { return length * 13 } KanjiData.prototype.getLength = function getLength () { return this.data.length } KanjiData.prototype.getBitsLength = function getBitsLength () { return KanjiData.getBitsLength(this.data.length) } KanjiData.prototype.write = function (bitBuffer) { let i // In the Shift JIS system, Kanji characters are represented by a two byte combination. // These byte values are shifted from the JIS X 0208 values. // JIS X 0208 gives details of the shift coded representation. for (i = 0; i < this.data.length; i++) { let value = Utils.toSJIS(this.data[i]) // For characters with Shift JIS values from 0x8140 to 0x9FFC: if (value >= 0x8140 && value <= 0x9FFC) { // Subtract 0x8140 from Shift JIS value value -= 0x8140 // For characters with Shift JIS values from 0xE040 to 0xEBBF } else if (value >= 0xE040 && value <= 0xEBBF) { // Subtract 0xC140 from Shift JIS value value -= 0xC140 } else { throw new Error( 'Invalid SJIS character: ' + this.data[i] + '\n' + 'Make sure your charset is UTF-8') } // Multiply most significant byte of result by 0xC0 // and add least significant byte to product value = (((value >>> 8) & 0xff) * 0xC0) + (value & 0xff) // Convert result to a 13-bit binary string bitBuffer.put(value, 13) } } module.exports = KanjiData },{"./mode":16,"./utils":23}],15:[function(require,module,exports){ /** * Data mask pattern reference * @type {Object} */ exports.Patterns = { PATTERN000: 0, PATTERN001: 1, PATTERN010: 2, PATTERN011: 3, PATTERN100: 4, PATTERN101: 5, PATTERN110: 6, PATTERN111: 7 } /** * Weighted penalty scores for the undesirable features * @type {Object} */ const PenaltyScores = { N1: 3, N2: 3, N3: 40, N4: 10 } /** * Check if mask pattern value is valid * * @param {Number} mask Mask pattern * @return {Boolean} true if valid, false otherwise */ exports.isValid = function isValid (mask) { return mask != null && mask !== '' && !isNaN(mask) && mask >= 0 && mask <= 7 } /** * Returns mask pattern from a value. * If value is not valid, returns undefined * * @param {Number|String} value Mask pattern value * @return {Number} Valid mask pattern or undefined */ exports.from = function from (value) { return exports.isValid(value) ? parseInt(value, 10) : undefined } /** * Find adjacent modules in row/column with the same color * and assign a penalty value. * * Points: N1 + i * i is the amount by which the number of adjacent modules of the same color exceeds 5 */ exports.getPenaltyN1 = function getPenaltyN1 (data) { const size = data.size let points = 0 let sameCountCol = 0 let sameCountRow = 0 let lastCol = null let lastRow = null for (let row = 0; row < size; row++) { sameCountCol = sameCountRow = 0 lastCol = lastRow = null for (let col = 0; col < size; col++) { let module = data.get(row, col) if (module === lastCol) { sameCountCol++ } else { if (sameCountCol >= 5) points += PenaltyScores.N1 + (sameCountCol - 5) lastCol = module sameCountCol = 1 } module = data.get(col, row) if (module === lastRow) { sameCountRow++ } else { if (sameCountRow >= 5) points += PenaltyScores.N1 + (sameCountRow - 5) lastRow = module sameCountRow = 1 } } if (sameCountCol >= 5) points += PenaltyScores.N1 + (sameCountCol - 5) if (sameCountRow >= 5) points += PenaltyScores.N1 + (sameCountRow - 5) } return points } /** * Find 2x2 blocks with the same color and assign a penalty value * * Points: N2 * (m - 1) * (n - 1) */ exports.getPenaltyN2 = function getPenaltyN2 (data) { const size = data.size let points = 0 for (let row = 0; row < size - 1; row++) { for (let col = 0; col < size - 1; col++) { const last = data.get(row, col) + data.get(row, col + 1) + data.get(row + 1, col) + data.get(row + 1, col + 1) if (last === 4 || last === 0) points++ } } return points * PenaltyScores.N2 } /** * Find 1:1:3:1:1 ratio (dark:light:dark:light:dark) pattern in row/column, * preceded or followed by light area 4 modules wide * * Points: N3 * number of pattern found */ exports.getPenaltyN3 = function getPenaltyN3 (data) { const size = data.size let points = 0 let bitsCol = 0 let bitsRow = 0 for (let row = 0; row < size; row++) { bitsCol = bitsRow = 0 for (let col = 0; col < size; col++) { bitsCol = ((bitsCol << 1) & 0x7FF) | data.get(row, col) if (col >= 10 && (bitsCol === 0x5D0 || bitsCol === 0x05D)) points++ bitsRow = ((bitsRow << 1) & 0x7FF) | data.get(col, row) if (col >= 10 && (bitsRow === 0x5D0 || bitsRow === 0x05D)) points++ } } return points * PenaltyScores.N3 } /** * Calculate proportion of dark modules in entire symbol * * Points: N4 * k * * k is the rating of the deviation of the proportion of dark modules * in the symbol from 50% in steps of 5% */ exports.getPenaltyN4 = function getPenaltyN4 (data) { let darkCount = 0 const modulesCount = data.data.length for (let i = 0; i < modulesCount; i++) darkCount += data.data[i] const k = Math.abs(Math.ceil((darkCount * 100 / modulesCount) / 5) - 10) return k * PenaltyScores.N4 } /** * Return mask value at given position * * @param {Number} maskPattern Pattern reference value * @param {Number} i Row * @param {Number} j Column * @return {Boolean} Mask value */ function getMaskAt (maskPattern, i, j) { switch (maskPattern) { case exports.Patterns.PATTERN000: return (i + j) % 2 === 0 case exports.Patterns.PATTERN001: return i % 2 === 0 case exports.Patterns.PATTERN010: return j % 3 === 0 case exports.Patterns.PATTERN011: return (i + j) % 3 === 0 case exports.Patterns.PATTERN100: return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 === 0 case exports.Patterns.PATTERN101: return (i * j) % 2 + (i * j) % 3 === 0 case exports.Patterns.PATTERN110: return ((i * j) % 2 + (i * j) % 3) % 2 === 0 case exports.Patterns.PATTERN111: return ((i * j) % 3 + (i + j) % 2) % 2 === 0 default: throw new Error('bad maskPattern:' + maskPattern) } } /** * Apply a mask pattern to a BitMatrix * * @param {Number} pattern Pattern reference number * @param {BitMatrix} data BitMatrix data */ exports.applyMask = function applyMask (pattern, data) { const size = data.size for (let col = 0; col < size; col++) { for (let row = 0; row < size; row++) { if (data.isReserved(row, col)) continue data.xor(row, col, getMaskAt(pattern, row, col)) } } } /** * Returns the best mask pattern for data * * @param {BitMatrix} data * @return {Number} Mask pattern reference number */ exports.getBestMask = function getBestMask (data, setupFormatFunc) { const numPatterns = Object.keys(exports.Patterns).length let bestPattern = 0 let lowerPenalty = Infinity for (let p = 0; p < numPatterns; p++) { setupFormatFunc(p) exports.applyMask(p, data) // Calculate penalty const penalty = exports.getPenaltyN1(data) + exports.getPenaltyN2(data) + exports.getPenaltyN3(data) + exports.getPenaltyN4(data) // Undo previously applied mask exports.applyMask(p, data) if (penalty < lowerPenalty) { lowerPenalty = penalty bestPattern = p } } return bestPattern } },{}],16:[function(require,module,exports){ const VersionCheck = require('./version-check') const Regex = require('./regex') /** * Numeric mode encodes data from the decimal digit set (0 - 9) * (byte values 30HEX to 39HEX). * Normally, 3 data characters are represented by 10 bits. * * @type {Object} */ exports.NUMERIC = { id: 'Numeric', bit: 1 << 0, ccBits: [10, 12, 14] } /** * Alphanumeric mode encodes data from a set of 45 characters, * i.e. 10 numeric digits (0 - 9), * 26 alphabetic characters (A - Z), * and 9 symbols (SP, $, %, *, +, -, ., /, :). * Normally, two input characters are represented by 11 bits. * * @type {Object} */ exports.ALPHANUMERIC = { id: 'Alphanumeric', bit: 1 << 1, ccBits: [9, 11, 13] } /** * In byte mode, data is encoded at 8 bits per character. * * @type {Object} */ exports.BYTE = { id: 'Byte', bit: 1 << 2, ccBits: [8, 16, 16] } /** * The Kanji mode efficiently encodes Kanji characters in accordance with * the Shift JIS system based on JIS X 0208. * The Shift JIS values are shifted from the JIS X 0208 values. * JIS X 0208 gives details of the shift coded representation. * Each two-byte character value is compacted to a 13-bit binary codeword. * * @type {Object} */ exports.KANJI = { id: 'Kanji', bit: 1 << 3, ccBits: [8, 10, 12] } /** * Mixed mode will contain a sequences of data in a combination of any of * the modes described above * * @type {Object} */ exports.MIXED = { bit: -1 } /** * Returns the number of bits needed to store the data length * according to QR Code specifications. * * @param {Mode} mode Data mode * @param {Number} version QR Code version * @return {Number} Number of bits */ exports.getCharCountIndicator = function getCharCountIndicator (mode, version) { if (!mode.ccBits) throw new Error('Invalid mode: ' + mode) if (!VersionCheck.isValid(version)) { throw new Error('Invalid version: ' + version) } if (version >= 1 && version < 10) return mode.ccBits[0] else if (version < 27) return mode.ccBits[1] return mode.ccBits[2] } /** * Returns the most efficient mode to store the specified data * * @param {String} dataStr Input data string * @return {Mode} Best mode */ exports.getBestModeForData = function getBestModeForData (dataStr) { if (Regex.testNumeric(dataStr)) return exports.NUMERIC else if (Regex.testAlphanumeric(dataStr)) return exports.ALPHANUMERIC else if (Regex.testKanji(dataStr)) return exports.KANJI else return exports.BYTE } /** * Return mode name as string * * @param {Mode} mode Mode object * @returns {String} Mode name */ exports.toString = function toString (mode) { if (mode && mode.id) return mode.id throw new Error('Invalid mode') } /** * Check if input param is a valid mode object * * @param {Mode} mode Mode object * @returns {Boolean} True if valid mode, false otherwise */ exports.isValid = function isValid (mode) { return mode && mode.bit && mode.ccBits } /** * Get mode object from its name * * @param {String} string Mode name * @returns {Mode} Mode object */ function fromString (string) { if (typeof string !== 'string') { throw new Error('Param is not a string') } const lcStr = string.toLowerCase() switch (lcStr) { case 'numeric': return exports.NUMERIC case 'alphanumeric': return exports.ALPHANUMERIC case 'kanji': return exports.KANJI case 'byte': return exports.BYTE default: throw new Error('Unknown mode: ' + string) } } /** * Returns mode from a value. * If value is not a valid mode, returns defaultValue * * @param {Mode|String} value Encoding mode * @param {Mode} defaultValue Fallback value * @return {Mode} Encoding mode */ exports.from = function from (value, defaultValue) { if (exports.isValid(value)) { return value } try { return fromString(value) } catch (e) { return defaultValue } } },{"./regex":21,"./version-check":24}],17:[function(require,module,exports){ const Mode = require('./mode') function NumericData (data) { this.mode = Mode.NUMERIC this.data = data.toString() } NumericData.getBitsLength = function getBitsLength (length) { return 10 * Math.floor(length / 3) + ((length % 3) ? ((length % 3) * 3 + 1) : 0) } NumericData.prototype.getLength = function getLength () { return this.data.length } NumericData.prototype.getBitsLength = function getBitsLength () { return NumericData.getBitsLength(this.data.length) } NumericData.prototype.write = function write (bitBuffer) { let i, group, value // The input data string is divided into groups of three digits, // and each group is converted to its 10-bit binary equivalent. for (i = 0; i + 3 <= this.data.length; i += 3) { group = this.data.substr(i, 3) value = parseInt(group, 10) bitBuffer.put(value, 10) } // If the number of input digits is not an exact multiple of three, // the final one or two digits are converted to 4 or 7 bits respectively. const remainingNum = this.data.length - i if (remainingNum > 0) { group = this.data.substr(i) value = parseInt(group, 10) bitBuffer.put(value, remainingNum * 3 + 1) } } module.exports = NumericData },{"./mode":16}],18:[function(require,module,exports){ const GF = require('./galois-field') /** * Multiplies two polynomials inside Galois Field * * @param {Uint8Array} p1 Polynomial * @param {Uint8Array} p2 Polynomial * @return {Uint8Array} Product of p1 and p2 */ exports.mul = function mul (p1, p2) { const coeff = new Uint8Array(p1.length + p2.length - 1) for (let i = 0; i < p1.length; i++) { for (let j = 0; j < p2.length; j++) { coeff[i + j] ^= GF.mul(p1[i], p2[j]) } } return coeff } /** * Calculate the remainder of polynomials division * * @param {Uint8Array} divident Polynomial * @param {Uint8Array} divisor Polynomial * @return {Uint8Array} Remainder */ exports.mod = function mod (divident, divisor) { let result = new Uint8Array(divident) while ((result.length - divisor.length) >= 0) { const coeff = result[0] for (let i = 0; i < divisor.length; i++) { result[i] ^= GF.mul(divisor[i], coeff) } // remove all zeros from buffer head let offset = 0 while (offset < result.length && result[offset] === 0) offset++ result = result.slice(offset) } return result } /** * Generate an irreducible generator polynomial of specified degree * (used by Reed-Solomon encoder) * * @param {Number} degree Degree of the generator polynomial * @return {Uint8Array} Buffer containing polynomial coefficients */ exports.generateECPolynomial = function generateECPolynomial (degree) { let poly = new Uint8Array([1]) for (let i = 0; i < degree; i++) { poly = exports.mul(poly, new Uint8Array([1, GF.exp(i)])) } return poly } },{"./galois-field":13}],19:[function(require,module,exports){ const Utils = require('./utils') const ECLevel = require('./error-correction-level') const BitBuffer = require('./bit-buffer') const BitMatrix = require('./bit-matrix') const AlignmentPattern = require('./alignment-pattern') const FinderPattern = require('./finder-pattern') const MaskPattern = require('./mask-pattern') const ECCode = require('./error-correction-code') const ReedSolomonEncoder = require('./reed-solomon-encoder') const Version = require('./version') const FormatInfo = require('./format-info') const Mode = require('./mode') const Segments = require('./segments') /** * QRCode for JavaScript * * modified by Ryan Day for nodejs support * Copyright (c) 2011 Ryan Day * * Licensed under the MIT license: * http://www.opensource.org/licenses/mit-license.php * //--------------------------------------------------------------------- // QRCode for JavaScript // // Copyright (c) 2009 Kazuhiko Arase // // URL: http://www.d-project.com/ // // Licensed under the MIT license: // http://www.opensource.org/licenses/mit-license.php // // The word "QR Code" is registered trademark of // DENSO WAVE INCORPORATED // http://www.denso-wave.com/qrcode/faqpatent-e.html // //--------------------------------------------------------------------- */ /** * Add finder patterns bits to matrix * * @param {BitMatrix} matrix Modules matrix * @param {Number} version QR Code version */ function setupFinderPattern (matrix, version) { const size = matrix.size const pos = FinderPattern.getPositions(version) for (let i = 0; i < pos.length; i++) { const row = pos[i][0] const col = pos[i][1] for (let r = -1; r <= 7; r++) { if (row + r <= -1 || size <= row + r) continue for (let c = -1; c <= 7; c++) { if (col + c <= -1 || size <= col + c) continue if ((r >= 0 && r <= 6 && (c === 0 || c === 6)) || (c >= 0 && c <= 6 && (r === 0 || r === 6)) || (r >= 2 && r <= 4 && c >= 2 && c <= 4)) { matrix.set(row + r, col + c, true, true) } else { matrix.set(row + r, col + c, false, true) } } } } } /** * Add timing pattern bits to matrix * * Note: this function must be called before {@link setupAlignmentPattern} * * @param {BitMatrix} matrix Modules matrix */ function setupTimingPattern (matrix) { const size = matrix.size for (let r = 8; r < size - 8; r++) { const value = r % 2 === 0 matrix.set(r, 6, value, true) matrix.set(6, r, value, true) } } /** * Add alignment patterns bits to matrix * * Note: this function must be called after {@link setupTimingPattern} * * @param {BitMatrix} matrix Modules matrix * @param {Number} version QR Code version */ function setupAlignmentPattern (matrix, version) { const pos = AlignmentPattern.getPositions(version) for (let i = 0; i < pos.length; i++) { const row = pos[i][0] const col = pos[i][1] for (let r = -2; r <= 2; r++) { for (let c = -2; c <= 2; c++) { if (r === -2 || r === 2 || c === -2 || c === 2 || (r === 0 && c === 0)) { matrix.set(row + r, col + c, true, true) } else { matrix.set(row + r, col + c, false, true) } } } } } /** * Add version info bits to matrix * * @param {BitMatrix} matrix Modules matrix * @param {Number} version QR Code version */ function setupVersionInfo (matrix, version) { const size = matrix.size const bits = Version.getEncodedBits(version) let row, col, mod for (let i = 0; i < 18; i++) { row = Math.floor(i / 3) col = i % 3 + size - 8 - 3 mod = ((bits >> i) & 1) === 1 matrix.set(row, col, mod, true) matrix.set(col, row, mod, true) } } /** * Add format info bits to matrix * * @param {BitMatrix} matrix Modules matrix * @param {ErrorCorrectionLevel} errorCorrectionLevel Error correction level * @param {Number} maskPattern Mask pattern reference value */ function setupFormatInfo (matrix, errorCorrectionLevel, maskPattern) { const size = matrix.size const bits = FormatInfo.getEncodedBits(errorCorrectionLevel, maskPattern) let i, mod for (i = 0; i < 15; i++) { mod = ((bits >> i) & 1) === 1 // vertical if (i < 6) { matrix.set(i, 8, mod, true) } else if (i < 8) { matrix.set(i + 1, 8, mod, true) } else { matrix.set(size - 15 + i, 8, mod, true) } // horizontal if (i < 8) { matrix.set(8, size - i - 1, mod, true) } else if (i < 9) { matrix.set(8, 15 - i - 1 + 1, mod, true) } else { matrix.set(8, 15 - i - 1, mod, true) } } // fixed module matrix.set(size - 8, 8, 1, true) } /** * Add encoded data bits to matrix * * @param {BitMatrix} matrix Modules matrix * @param {Uint8Array} data Data codewords */ function setupData (matrix, data) { const size = matrix.size let inc = -1 let row = size - 1 let bitIndex = 7 let byteIndex = 0 for (let col = size - 1; col > 0; col -= 2) { if (col === 6) col-- while (true) { for (let c = 0; c < 2; c++) { if (!matrix.isReserved(row, col - c)) { let dark = false if (byteIndex < data.length) { dark = (((data[byteIndex] >>> bitIndex) & 1) === 1) } matrix.set(row, col - c, dark) bitIndex-- if (bitIndex === -1) { byteIndex++ bitIndex = 7 } } } row += inc if (row < 0 || size <= row) { row -= inc inc = -inc break } } } } /** * Create encoded codewords from data input * * @param {Number} version QR Code version * @param {ErrorCorrectionLevel} errorCorrectionLevel Error correction level * @param {ByteData} data Data input * @return {Uint8Array} Buffer containing encoded codewords */ function createData (version, errorCorrectionLevel, segments) { // Prepare data buffer const buffer = new BitBuffer() segments.forEach(function (data) { // prefix data with mode indicator (4 bits) buffer.put(data.mode.bit, 4) // Prefix data with character count indicator. // The character count indicator is a string of bits that represents the // number of characters that are being encoded. // The character count indicator must be placed after the mode indicator // and must be a certain number of bits long, depending on the QR version // and data mode // @see {@link Mode.getCharCountIndicator}. buffer.put(data.getLength(), Mode.getCharCountIndicator(data.mode, version)) // add binary data sequence to buffer data.write(buffer) }) // Calculate required number of bits const totalCodewords = Utils.getSymbolTotalCodewords(version) const ecTotalCodewords = ECCode.getTotalCodewordsCount(version, errorCorrectionLevel) const dataTotalCodewordsBits = (totalCodewords - ecTotalCodewords) * 8 // Add a terminator. // If the bit string is shorter than the total number of required bits, // a terminator of up to four 0s must be added to the right side of the string. // If the bit string is more than four bits shorter than the required number of bits, // add four 0s to the end. if (buffer.getLengthInBits() + 4 <= dataTotalCodewordsBits) { buffer.put(0, 4) } // If the bit string is fewer than four bits shorter, add only the number of 0s that // are needed to reach the required number of bits. // After adding the terminator, if the number of bits in the string is not a multiple of 8, // pad the string on the right with 0s to make the string's length a multiple of 8. while (buffer.getLengthInBits() % 8 !== 0) { buffer.putBit(0) } // Add pad bytes if the string is still shorter than the total number of required bits. // Extend the buffer to fill the data capacity of the symbol corresponding to // the Version and Error Correction Level by adding the Pad Codewords 11101100 (0xEC) // and 00010001 (0x11) alternately. const remainingByte = (dataTotalCodewordsBits - buffer.getLengthInBits()) / 8 for (let i = 0; i < remainingByte; i++) { buffer.put(i % 2 ? 0x11 : 0xEC, 8) } return createCodewords(buffer, version, errorCorrectionLevel) } /** * Encode input data with Reed-Solomon and return codewords with * relative error correction bits * * @param {BitBuffer} bitBuffer Data to encode * @param {Number} version QR Code version * @param {ErrorCorrectionLevel} errorCorrectionLevel Error correction level * @return {Uint8Array} Buffer containing encoded codewords */ function createCodewords (bitBuffer, version, errorCorrectionLevel) { // Total codewords for this QR code version (Data + Error correction) const totalCodewords = Utils.getSymbolTotalCodewords(version) // Total number of error correction codewords const ecTotalCodewords = ECCode.getTotalCodewordsCount(version, errorCorrectionLevel) // Total number of data codewords const dataTotalCodewords = totalCodewords - ecTotalCodewords // Total number of blocks const ecTotalBlocks = ECCode.getBlocksCount(version, errorCorrectionLevel) // Calculate how many blocks each group should contain const blocksInGroup2 = totalCodewords % ecTotalBlocks const blocksInGroup1 = ecTotalBlocks - blocksInGroup2 const totalCodewordsInGroup1 = Math.floor(totalCodewords / ecTotalBlocks) const dataCodewordsInGroup1 = Math.floor(dataTotalCodewords / ecTotalBlocks) const dataCodewordsInGroup2 = dataCodewordsInGroup1 + 1 // Number of EC codewords is the same for both groups const ecCount = totalCodewordsInGroup1 - dataCodewordsInGroup1 // Initialize a Reed-Solomon encoder with a generator polynomial of degree ecCount const rs = new ReedSolomonEncoder(ecCount) let offset = 0 const dcData = new Array(ecTotalBlocks) const ecData = new Array(ecTotalBlocks) let maxDataSize = 0 const buffer = new Uint8Array(bitBuffer.buffer) // Divide the buffer into the required number of blocks for (let b = 0; b < ecTotalBlocks; b++) { const dataSize = b < blocksInGroup1 ? dataCodewordsInGroup1 : dataCodewordsInGroup2 // extract a block of data from buffer dcData[b] = buffer.slice(offset, offset + dataSize) // Calculate EC codewords for this data block ecData[b] = rs.encode(dcData[b]) offset += dataSize maxDataSize = Math.max(maxDataSize, dataSize) } // Create final data // Interleave the data and error correction codewords from each block const data = new Uint8Array(totalCodewords) let index = 0 let i, r // Add data codewords for (i = 0; i < maxDataSize; i++) { for (r = 0; r < ecTotalBlocks; r++) { if (i < dcData[r].length) { data[index++] = dcData[r][i] } } } // Apped EC codewords for (i = 0; i < ecCount; i++) { for (r = 0; r < ecTotalBlocks; r++) { data[index++] = ecData[r][i] } } return data } /** * Build QR Code symbol * * @param {String} data Input string * @param {Number} version QR Code version * @param {ErrorCorretionLevel} errorCorrectionLevel Error level * @param {MaskPattern} maskPattern Mask pattern * @return {Object} Object containing symbol data */ function createSymbol (data, version, errorCorrectionLevel, maskPattern) { let segments if (Array.isArray(data)) { segments = Segments.fromArray(data) } else if (typeof data === 'string') { let estimatedVersion = version if (!estimatedVersion) { const rawSegments = Segments.rawSplit(data) // Estimate best version that can contain raw splitted segments estimatedVersion = Version.getBestVersionForData(rawSegments, errorCorrectionLevel) } // Build optimized segments // If estimated version is undefined, try with the highest version segments = Segments.fromString(data, estimatedVersion || 40) } else { throw new Error('Invalid data') } // Get the min version that can contain data const bestVersion = Version.getBestVersionForData(segments, errorCorrectionLevel) // If no version is found, data cannot be stored if (!bestVersion) { throw new Error('The amount of data is too big to be stored in a QR Code') } // If not specified, use min version as default if (!version) { version = bestVersion // Check if the specified version can contain the data } else if (version < bestVersion) { throw new Error('\n' + 'The chosen QR Code version cannot contain this amount of data.\n' + 'Minimum version required to store current data is: ' + bestVersion + '.\n' ) } const dataBits = createData(version, errorCorrectionLevel, segments) // Allocate matrix buffer const moduleCount = Utils.getSymbolSize(version) const modules = new BitMatrix(moduleCount) // Add function modules setupFinderPattern(modules, version) setupTimingPattern(modules) setupAlignmentPattern(modules, version) // Add temporary dummy bits for format info just to set them as reserved. // This is needed to prevent these bits from being masked by {@link MaskPattern.applyMask} // since the masking operation must be performed only on the encoding region. // These blocks will be replaced with correct values later in code. setupFormatInfo(modules, errorCorrectionLevel, 0) if (version >= 7) { setupVersionInfo(modules, version) } // Add data codewords setupData(modules, dataBits) if (isNaN(maskPattern)) { // Find best mask pattern maskPattern = MaskPattern.getBestMask(modules, setupFormatInfo.bind(null, modules, errorCorrectionLevel)) } // Apply mask pattern MaskPattern.applyMask(maskPattern, modules) // Replace format info bits with correct values setupFormatInfo(modules, errorCorrectionLevel, maskPattern) return { modules: modules, version: version, errorCorrectionLevel: errorCorrectionLevel, maskPattern: maskPattern, segments: segments } } /** * QR Code * * @param {String | Array} data Input data * @param {Object} options Optional configurations * @param {Number} options.version QR Code version * @param {String} options.errorCorrectionLevel Error correction level * @param {Function} options.toSJISFunc Helper func to convert utf8 to sjis */ exports.create = function create (data, options) { if (typeof data === 'undefined' || data === '') { throw new Error('No input text') } let errorCorrectionLevel = ECLevel.M let version let mask if (typeof options !== 'undefined') { // Use higher error correction level as default errorCorrectionLevel = ECLevel.from(options.errorCorrectionLevel, ECLevel.M) version = Version.from(options.version) mask = MaskPattern.from(options.maskPattern) if (options.toSJISFunc) { Utils.setToSJISFunction(options.toSJISFunc) } } return createSymbol(data, version, errorCorrectionLevel, mask) } },{"./alignment-pattern":4,"./bit-buffer":6,"./bit-matrix":7,"./error-correction-code":9,"./error-correction-level":10,"./finder-pattern":11,"./format-info":12,"./mask-pattern":15,"./mode":16,"./reed-solomon-encoder":20,"./segments":22,"./utils":23,"./version":25}],20:[function(require,module,exports){ const Polynomial = require('./polynomial') function ReedSolomonEncoder (degree) { this.genPoly = undefined this.degree = degree if (this.degree) this.initialize(this.degree) } /** * Initialize the encoder. * The input param should correspond to the number of error correction codewords. * * @param {Number} degree */ ReedSolomonEncoder.prototype.initialize = function initialize (degree) { // create an irreducible generator polynomial this.degree = degree this.genPoly = Polynomial.generateECPolynomial(this.degree) } /** * Encodes a chunk of data * * @param {Uint8Array} data Buffer containing input data * @return {Uint8Array} Buffer containing encoded data */ ReedSolomonEncoder.prototype.encode = function encode (data) { if (!this.genPoly) { throw new Error('Encoder not initialized') } // Calculate EC for this data block // extends data size to data+genPoly size const paddedData = new Uint8Array(data.length + this.degree) paddedData.set(data) // The error correction codewords are the remainder after dividing the data codewords // by a generator polynomial const remainder = Polynomial.mod(paddedData, this.genPoly) // return EC data blocks (last n byte, where n is the degree of genPoly) // If coefficients number in remainder are less than genPoly degree, // pad with 0s to the left to reach the needed number of coefficients const start = this.degree - remainder.length if (start > 0) { const buff = new Uint8Array(this.degree) buff.set(remainder, start) return buff } return remainder } module.exports = ReedSolomonEncoder },{"./polynomial":18}],21:[function(require,module,exports){ const numeric = '[0-9]+' const alphanumeric = '[A-Z $%*+\\-./:]+' let kanji = '(?:[u3000-u303F]|[u3040-u309F]|[u30A0-u30FF]|' + '[uFF00-uFFEF]|[u4E00-u9FAF]|[u2605-u2606]|[u2190-u2195]|u203B|' + '[u2010u2015u2018u2019u2025u2026u201Cu201Du2225u2260]|' + '[u0391-u0451]|[u00A7u00A8u00B1u00B4u00D7u00F7])+' kanji = kanji.replace(/u/g, '\\u') const byte = '(?:(?![A-Z0-9 $%*+\\-./:]|' + kanji + ')(?:.|[\r\n]))+' exports.KANJI = new RegExp(kanji, 'g') exports.BYTE_KANJI = new RegExp('[^A-Z0-9 $%*+\\-./:]+', 'g') exports.BYTE = new RegExp(byte, 'g') exports.NUMERIC = new RegExp(numeric, 'g') exports.ALPHANUMERIC = new RegExp(alphanumeric, 'g') const TEST_KANJI = new RegExp('^' + kanji + ' ) const TEST_NUMERIC = new RegExp('^' + numeric + ' ) const TEST_ALPHANUMERIC = new RegExp('^[A-Z0-9 $%*+\\-./:]+ ) exports.testKanji = function testKanji (str) { return TEST_KANJI.test(str) } exports.testNumeric = function testNumeric (str) { return TEST_NUMERIC.test(str) } exports.testAlphanumeric = function testAlphanumeric (str) { return TEST_ALPHANUMERIC.test(str) } },{}],22:[function(require,module,exports){ const Mode = require('./mode') const NumericData = require('./numeric-data') const AlphanumericData = require('./alphanumeric-data') const ByteData = require('./byte-data') const KanjiData = require('./kanji-data') const Regex = require('./regex') const Utils = require('./utils') const dijkstra = require('dijkstrajs') /** * Returns UTF8 byte length * * @param {String} str Input string * @return {Number} Number of byte */ function getStringByteLength (str) { return unescape(encodeURIComponent(str)).length } /** * Get a list of segments of the specified mode * from a string * * @param {Mode} mode Segment mode * @param {String} str String to process * @return {Array} Array of object with segments data */ function getSegments (regex, mode, str) { const segments = [] let result while ((result = regex.exec(str)) !== null) { segments.push({ data: result[0], index: result.index, mode: mode, length: result[0].length }) } return segments } /** * Extracts a series of segments with the appropriate * modes from a string * * @param {String} dataStr Input string * @return {Array} Array of object with segments data */ function getSegmentsFromString (dataStr) { const numSegs = getSegments(Regex.NUMERIC, Mode.NUMERIC, dataStr) const alphaNumSegs = getSegments(Regex.ALPHANUMERIC, Mode.ALPHANUMERIC, dataStr) let byteSegs let kanjiSegs if (Utils.isKanjiModeEnabled()) { byteSegs = getSegments(Regex.BYTE, Mode.BYTE, dataStr) kanjiSegs = getSegments(Regex.KANJI, Mode.KANJI, dataStr) } else { byteSegs = getSegments(Regex.BYTE_KANJI, Mode.BYTE, dataStr) kanjiSegs = [] } const segs = numSegs.concat(alphaNumSegs, byteSegs, kanjiSegs) return segs .sort(function (s1, s2) { return s1.index - s2.index }) .map(function (obj) { return { data: obj.data, mode: obj.mode, length: obj.length } }) } /** * Returns how many bits are needed to encode a string of * specified length with the specified mode * * @param {Number} length String length * @param {Mode} mode Segment mode * @return {Number} Bit length */ function getSegmentBitsLength (length, mode) { switch (mode) { case Mode.NUMERIC: return NumericData.getBitsLength(length) case Mode.ALPHANUMERIC: return AlphanumericData.getBitsLength(length) case Mode.KANJI: return KanjiData.getBitsLength(length) case Mode.BYTE: return ByteData.getBitsLength(length) } } /** * Merges adjacent segments which have the same mode * * @param {Array} segs Array of object with segments data * @return {Array} Array of object with segments data */ function mergeSegments (segs) { return segs.reduce(function (acc, curr) { const prevSeg = acc.length - 1 >= 0 ? acc[acc.length - 1] : null if (prevSeg && prevSeg.mode === curr.mode) { acc[acc.length - 1].data += curr.data return acc } acc.push(curr) return acc }, []) } /** * Generates a list of all possible nodes combination which * will be used to build a segments graph. * * Nodes are divided by groups. Each group will contain a list of all the modes * in which is possible to encode the given text. * * For example the text '12345' can be encoded as Numeric, Alphanumeric or Byte. * The group for '12345' will contain then 3 objects, one for each * possible encoding mode. * * Each node represents a possible segment. * * @param {Array} segs Array of object with segments data * @return {Array} Array of object with segments data */ function buildNodes (segs) { const nodes = [] for (let i = 0; i < segs.length; i++) { const seg = segs[i] switch (seg.mode) { case Mode.NUMERIC: nodes.push([seg, { data: seg.data, mode: Mode.ALPHANUMERIC, length: seg.length }, { data: seg.data, mode: Mode.BYTE, length: seg.length } ]) break case Mode.ALPHANUMERIC: nodes.push([seg, { data: seg.data, mode: Mode.BYTE, length: seg.length } ]) break case Mode.KANJI: nodes.push([seg, { data: seg.data, mode: Mode.BYTE, length: getStringByteLength(seg.data) } ]) break case Mode.BYTE: nodes.push([ { data: seg.data, mode: Mode.BYTE, length: getStringByteLength(seg.data) } ]) } } return nodes } /** * Builds a graph from a list of nodes. * All segments in each node group will be connected with all the segments of * the next group and so on. * * At each connection will be assigned a weight depending on the * segment's byte length. * * @param {Array} nodes Array of object with segments data * @param {Number} version QR Code version * @return {Object} Graph of all possible segments */ function buildGraph (nodes, version) { const table = {} const graph = { start: {} } let prevNodeIds = ['start'] for (let i = 0; i < nodes.length; i++) { const nodeGroup = nodes[i] const currentNodeIds = [] for (let j = 0; j < nodeGroup.length; j++) { const node = nodeGroup[j] const key = '' + i + j currentNodeIds.push(key) table[key] = { node: node, lastCount: 0 } graph[key] = {} for (let n = 0; n < prevNodeIds.length; n++) { const prevNodeId = prevNodeIds[n] if (table[prevNodeId] && table[prevNodeId].node.mode === node.mode) { graph[prevNodeId][key] = getSegmentBitsLength(table[prevNodeId].lastCount + node.length, node.mode) - getSegmentBitsLength(table[prevNodeId].lastCount, node.mode) table[prevNodeId].lastCount += node.length } else { if (table[prevNodeId]) table[prevNodeId].lastCount = node.length graph[prevNodeId][key] = getSegmentBitsLength(node.length, node.mode) + 4 + Mode.getCharCountIndicator(node.mode, version) // switch cost } } } prevNodeIds = currentNodeIds } for (let n = 0; n < prevNodeIds.length; n++) { graph[prevNodeIds[n]].end = 0 } return { map: graph, table: table } } /** * Builds a segment from a specified data and mode. * If a mode is not specified, the more suitable will be used. * * @param {String} data Input data * @param {Mode | String} modesHint Data mode * @return {Segment} Segment */ function buildSingleSegment (data, modesHint) { let mode const bestMode = Mode.getBestModeForData(data) mode = Mode.from(modesHint, bestMode) // Make sure data can be encoded if (mode !== Mode.BYTE && mode.bit < bestMode.bit) { throw new Error('"' + data + '"' + ' cannot be encoded with mode ' + Mode.toString(mode) + '.\n Suggested mode is: ' + Mode.toString(bestMode)) } // Use Mode.BYTE if Kanji support is disabled if (mode === Mode.KANJI && !Utils.isKanjiModeEnabled()) { mode = Mode.BYTE } switch (mode) { case Mode.NUMERIC: return new NumericData(data) case Mode.ALPHANUMERIC: return new AlphanumericData(data) case Mode.KANJI: return new KanjiData(data) case Mode.BYTE: return new ByteData(data) } } /** * Builds a list of segments from an array. * Array can contain Strings or Objects with segment's info. * * For each item which is a string, will be generated a segment with the given * string and the more appropriate encoding mode. * * For each item which is an object, will be generated a segment with the given * data and mode. * Objects must contain at least the property "data". * If property "mode" is not present, the more suitable mode will be used. * * @param {Array} array Array of objects with segments data * @return {Array} Array of Segments */ exports.fromArray = function fromArray (array) { return array.reduce(function (acc, seg) { if (typeof seg === 'string') { acc.push(buildSingleSegment(seg, null)) } else if (seg.data) { acc.push(buildSingleSegment(seg.data, seg.mode)) } return acc }, []) } /** * Builds an optimized sequence of segments from a string, * which will produce the shortest possible bitstream. * * @param {String} data Input string * @param {Number} version QR Code version * @return {Array} Array of segments */ exports.fromString = function fromString (data, version) { const segs = getSegmentsFromString(data, Utils.isKanjiModeEnabled()) const nodes = buildNodes(segs) const graph = buildGraph(nodes, version) const path = dijkstra.find_path(graph.map, 'start', 'end') const optimizedSegs = [] for (let i = 1; i < path.length - 1; i++) { optimizedSegs.push(graph.table[path[i]].node) } return exports.fromArray(mergeSegments(optimizedSegs)) } /** * Splits a string in various segments with the modes which * best represent their content. * The produced segments are far from being optimized. * The output of this function is only used to estimate a QR Code version * which may contain the data. * * @param {string} data Input string * @return {Array} Array of segments */ exports.rawSplit = function rawSplit (data) { return exports.fromArray( getSegmentsFromString(data, Utils.isKanjiModeEnabled()) ) } },{"./alphanumeric-data":5,"./byte-data":8,"./kanji-data":14,"./mode":16,"./numeric-data":17,"./regex":21,"./utils":23,"dijkstrajs":1}],23:[function(require,module,exports){ let toSJISFunction const CODEWORDS_COUNT = [ 0, // Not used 26, 44, 70, 100, 134, 172, 196, 242, 292, 346, 404, 466, 532, 581, 655, 733, 815, 901, 991, 1085, 1156, 1258, 1364, 1474, 1588, 1706, 1828, 1921, 2051, 2185, 2323, 2465, 2611, 2761, 2876, 3034, 3196, 3362, 3532, 3706 ] /** * Returns the QR Code size for the specified version * * @param {Number} version QR Code version * @return {Number} size of QR code */ exports.getSymbolSize = function getSymbolSize (version) { if (!version) throw new Error('"version" cannot be null or undefined') if (version < 1 || version > 40) throw new Error('"version" should be in range from 1 to 40') return version * 4 + 17 } /** * Returns the total number of codewords used to store data and EC information. * * @param {Number} version QR Code version * @return {Number} Data length in bits */ exports.getSymbolTotalCodewords = function getSymbolTotalCodewords (version) { return CODEWORDS_COUNT[version] } /** * Encode data with Bose-Chaudhuri-Hocquenghem * * @param {Number} data Value to encode * @return {Number} Encoded value */ exports.getBCHDigit = function (data) { let digit = 0 while (data !== 0) { digit++ data >>>= 1 } return digit } exports.setToSJISFunction = function setToSJISFunction (f) { if (typeof f !== 'function') { throw new Error('"toSJISFunc" is not a valid function.') } toSJISFunction = f } exports.isKanjiModeEnabled = function () { return typeof toSJISFunction !== 'undefined' } exports.toSJIS = function toSJIS (kanji) { return toSJISFunction(kanji) } },{}],24:[function(require,module,exports){ /** * Check if QR Code version is valid * * @param {Number} version QR Code version * @return {Boolean} true if valid version, false otherwise */ exports.isValid = function isValid (version) { return !isNaN(version) && version >= 1 && version <= 40 } },{}],25:[function(require,module,exports){ const Utils = require('./utils') const ECCode = require('./error-correction-code') const ECLevel = require('./error-correction-level') const Mode = require('./mode') const VersionCheck = require('./version-check') // Generator polynomial used to encode version information const G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0) const G18_BCH = Utils.getBCHDigit(G18) function getBestVersionForDataLength (mode, length, errorCorrectionLevel) { for (let currentVersion = 1; currentVersion <= 40; currentVersion++) { if (length <= exports.getCapacity(currentVersion, errorCorrectionLevel, mode)) { return currentVersion } } return undefined } function getReservedBitsCount (mode, version) { // Character count indicator + mode indicator bits return Mode.getCharCountIndicator(mode, version) + 4 } function getTotalBitsFromDataArray (segments, version) { let totalBits = 0 segments.forEach(function (data) { const reservedBits = getReservedBitsCount(data.mode, version) totalBits += reservedBits + data.getBitsLength() }) return totalBits } function getBestVersionForMixedData (segments, errorCorrectionLevel) { for (let currentVersion = 1; currentVersion <= 40; currentVersion++) { const length = getTotalBitsFromDataArray(segments, currentVersion) if (length <= exports.getCapacity(currentVersion, errorCorrectionLevel, Mode.MIXED)) { return currentVersion } } return undefined } /** * Returns version number from a value. * If value is not a valid version, returns defaultValue * * @param {Number|String} value QR Code version * @param {Number} defaultValue Fallback value * @return {Number} QR Code version number */ exports.from = function from (value, defaultValue) { if (VersionCheck.isValid(value)) { return parseInt(value, 10) } return defaultValue } /** * Returns how much data can be stored with the specified QR code version * and error correction level * * @param {Number} version QR Code version (1-40) * @param {Number} errorCorrectionLevel Error correction level * @param {Mode} mode Data mode * @return {Number} Quantity of storable data */ exports.getCapacity = function getCapacity (version, errorCorrectionLevel, mode) { if (!VersionCheck.isValid(version)) { throw new Error('Invalid QR Code version') } // Use Byte mode as default if (typeof mode === 'undefined') mode = Mode.BYTE // Total codewords for this QR code version (Data + Error correction) const totalCodewords = Utils.getSymbolTotalCodewords(version) // Total number of error correction codewords const ecTotalCodewords = ECCode.getTotalCodewordsCount(version, errorCorrectionLevel) // Total number of data codewords const dataTotalCodewordsBits = (totalCodewords - ecTotalCodewords) * 8 if (mode === Mode.MIXED) return dataTotalCodewordsBits const usableBits = dataTotalCodewordsBits - getReservedBitsCount(mode, version) // Return max number of storable codewords switch (mode) { case Mode.NUMERIC: return Math.floor((usableBits / 10) * 3) case Mode.ALPHANUMERIC: return Math.floor((usableBits / 11) * 2) case Mode.KANJI: return Math.floor(usableBits / 13) case Mode.BYTE: default: return Math.floor(usableBits / 8) } } /** * Returns the minimum version needed to contain the amount of data * * @param {Segment} data Segment of data * @param {Number} [errorCorrectionLevel=H] Error correction level * @param {Mode} mode Data mode * @return {Number} QR Code version */ exports.getBestVersionForData = function getBestVersionForData (data, errorCorrectionLevel) { let seg const ecl = ECLevel.from(errorCorrectionLevel, ECLevel.M) if (Array.isArray(data)) { if (data.length > 1) { return getBestVersionForMixedData(data, ecl) } if (data.length === 0) { return 1 } seg = data[0] } else { seg = data } return getBestVersionForDataLength(seg.mode, seg.getLength(), ecl) } /** * Returns version information with relative error correction bits * * The version information is included in QR Code symbols of version 7 or larger. * It consists of an 18-bit sequence containing 6 data bits, * with 12 error correction bits calculated using the (18, 6) Golay code. * * @param {Number} version QR Code version * @return {Number} Encoded version info bits */ exports.getEncodedBits = function getEncodedBits (version) { if (!VersionCheck.isValid(version) || version < 7) { throw new Error('Invalid QR Code version') } let d = version << 12 while (Utils.getBCHDigit(d) - G18_BCH >= 0) { d ^= (G18 << (Utils.getBCHDigit(d) - G18_BCH)) } return (version << 12) | d } },{"./error-correction-code":9,"./error-correction-level":10,"./mode":16,"./utils":23,"./version-check":24}],26:[function(require,module,exports){ const Utils = require('./utils') function clearCanvas (ctx, canvas, size) { ctx.clearRect(0, 0, canvas.width, canvas.height) if (!canvas.style) canvas.style = {} canvas.height = size canvas.width = size canvas.style.height = size + 'px' canvas.style.width = size + 'px' } function getCanvasElement () { try { return document.createElement('canvas') } catch (e) { throw new Error('You need to specify a canvas element') } } exports.render = function render (qrData, canvas, options) { let opts = options let canvasEl = canvas if (typeof opts === 'undefined' && (!canvas || !canvas.getContext)) { opts = canvas canvas = undefined } if (!canvas) { canvasEl = getCanvasElement() } opts = Utils.getOptions(opts) const size = Utils.getImageWidth(qrData.modules.size, opts) const ctx = canvasEl.getContext('2d') const image = ctx.createImageData(size, size) Utils.qrToImageData(image.data, qrData, opts) clearCanvas(ctx, canvasEl, size) ctx.putImageData(image, 0, 0) return canvasEl } exports.renderToDataURL = function renderToDataURL (qrData, canvas, options) { let opts = options if (typeof opts === 'undefined' && (!canvas || !canvas.getContext)) { opts = canvas canvas = undefined } if (!opts) opts = {} const canvasEl = exports.render(qrData, canvas, opts) const type = opts.type || 'image/png' const rendererOpts = opts.rendererOpts || {} return canvasEl.toDataURL(type, rendererOpts.quality) } },{"./utils":28}],27:[function(require,module,exports){ const Utils = require('./utils') function getColorAttrib (color, attrib) { const alpha = color.a / 255 const str = attrib + '="' + color.hex + '"' return alpha < 1 ? str + ' ' + attrib + '-opacity="' + alpha.toFixed(2).slice(1) + '"' : str } function svgCmd (cmd, x, y) { let str = cmd + x if (typeof y !== 'undefined') str += ' ' + y return str } function qrToPath (data, size, margin) { let path = '' let moveBy = 0 let newRow = false let lineLength = 0 for (let i = 0; i < data.length; i++) { const col = Math.floor(i % size) const row = Math.floor(i / size) if (!col && !newRow) newRow = true if (data[i]) { lineLength++ if (!(i > 0 && col > 0 && data[i - 1])) { path += newRow ? svgCmd('M', col + margin, 0.5 + row + margin) : svgCmd('m', moveBy, 0) moveBy = 0 newRow = false } if (!(col + 1 < size && data[i + 1])) { path += svgCmd('h', lineLength) lineLength = 0 } } else { moveBy++ } } return path } exports.render = function render (qrData, options, cb) { const opts = Utils.getOptions(options) const size = qrData.modules.size const data = qrData.modules.data const qrcodesize = size + opts.margin * 2 const bg = !opts.color.light.a ? '' : '' const path = '' const viewBox = 'viewBox="' + '0 0 ' + qrcodesize + ' ' + qrcodesize + '"' const width = !opts.width ? '' : 'width="' + opts.width + '" height="' + opts.width + '" ' const svgTag = '' + bg + path + '\n' if (typeof cb === 'function') { cb(null, svgTag) } return svgTag } },{"./utils":28}],28:[function(require,module,exports){ function hex2rgba (hex) { if (typeof hex === 'number') { hex = hex.toString() } if (typeof hex !== 'string') { throw new Error('Color should be defined as hex string') } let hexCode = hex.slice().replace('#', '').split('') if (hexCode.length < 3 || hexCode.length === 5 || hexCode.length > 8) { throw new Error('Invalid hex color: ' + hex) } // Convert from short to long form (fff -> ffffff) if (hexCode.length === 3 || hexCode.length === 4) { hexCode = Array.prototype.concat.apply([], hexCode.map(function (c) { return [c, c] })) } // Add default alpha value if (hexCode.length === 6) hexCode.push('F', 'F') const hexValue = parseInt(hexCode.join(''), 16) return { r: (hexValue >> 24) & 255, g: (hexValue >> 16) & 255, b: (hexValue >> 8) & 255, a: hexValue & 255, hex: '#' + hexCode.slice(0, 6).join('') } } exports.getOptions = function getOptions (options) { if (!options) options = {} if (!options.color) options.color = {} const margin = typeof options.margin === 'undefined' || options.margin === null || options.margin < 0 ? 4 : options.margin const width = options.width && options.width >= 21 ? options.width : undefined const scale = options.scale || 4 return { width: width, scale: width ? 4 : scale, margin: margin, color: { dark: hex2rgba(options.color.dark || '#000000ff'), light: hex2rgba(options.color.light || '#ffffffff') }, type: options.type, rendererOpts: options.rendererOpts || {} } } exports.getScale = function getScale (qrSize, opts) { return opts.width && opts.width >= qrSize + opts.margin * 2 ? opts.width / (qrSize + opts.margin * 2) : opts.scale } exports.getImageWidth = function getImageWidth (qrSize, opts) { const scale = exports.getScale(qrSize, opts) return Math.floor((qrSize + opts.margin * 2) * scale) } exports.qrToImageData = function qrToImageData (imgData, qr, opts) { const size = qr.modules.size const data = qr.modules.data const scale = exports.getScale(size, opts) const symbolSize = Math.floor((size + opts.margin * 2) * scale) const scaledMargin = opts.margin * scale const palette = [opts.color.light, opts.color.dark] for (let i = 0; i < symbolSize; i++) { for (let j = 0; j < symbolSize; j++) { let posDst = (i * symbolSize + j) * 4 let pxColor = opts.color.light if (i >= scaledMargin && j >= scaledMargin && i < symbolSize - scaledMargin && j < symbolSize - scaledMargin) { const iSrc = Math.floor((i - scaledMargin) / scale) const jSrc = Math.floor((j - scaledMargin) / scale) pxColor = palette[data[iSrc * size + jSrc] ? 1 : 0] } imgData[posDst++] = pxColor.r imgData[posDst++] = pxColor.g imgData[posDst++] = pxColor.b imgData[posDst] = pxColor.a } } } },{}],"qrcode/":[function(require,module,exports){ const canPromise = require('./can-promise') const QRCode = require('./core/qrcode') const CanvasRenderer = require('./renderer/canvas') const SvgRenderer = require('./renderer/svg-tag.js') function renderCanvas (renderFunc, canvas, text, opts, cb) { const args = [].slice.call(arguments, 1) const argsNum = args.length const isLastArgCb = typeof args[argsNum - 1] === 'function' if (!isLastArgCb && !canPromise()) { throw new Error('Callback required as last argument') } if (isLastArgCb) { if (argsNum < 2) { throw new Error('Too few arguments provided') } if (argsNum === 2) { cb = text text = canvas canvas = opts = undefined } else if (argsNum === 3) { if (canvas.getContext && typeof cb === 'undefined') { cb = opts opts = undefined } else { cb = opts opts = text text = canvas canvas = undefined } } } else { if (argsNum < 1) { throw new Error('Too few arguments provided') } if (argsNum === 1) { text = canvas canvas = opts = undefined } else if (argsNum === 2 && !canvas.getContext) { opts = text text = canvas canvas = undefined } return new Promise(function (resolve, reject) { try { const data = QRCode.create(text, opts) resolve(renderFunc(data, canvas, opts)) } catch (e) { reject(e) } }) } try { const data = QRCode.create(text, opts) cb(null, renderFunc(data, canvas, opts)) } catch (e) { cb(e) } } exports.create = QRCode.create exports.toCanvas = renderCanvas.bind(null, CanvasRenderer.render) exports.toDataURL = renderCanvas.bind(null, CanvasRenderer.renderToDataURL) // only svg for now. exports.toString = renderCanvas.bind(null, function (data, _, opts) { return SvgRenderer.render(data, opts) }) },{"./can-promise":3,"./core/qrcode":19,"./renderer/canvas":26,"./renderer/svg-tag.js":27}]},{},[])("qrcode/") });